OpenCV
4.9.0dev
Open Source Computer Vision

A simple Hausdorff distance measure between shapes defined by contours. More...
#include <opencv2/shape/shape_distance.hpp>
Public Member Functions  
virtual int  getDistanceFlag () const =0 
virtual float  getRankProportion () const =0 
virtual void  setDistanceFlag (int distanceFlag)=0 
Set the norm used to compute the Hausdorff value between two shapes. It can be L1 or L2 norm.  
virtual void  setRankProportion (float rankProportion)=0 
This method sets the rank proportion (or fractional value) that establish the Kth ranked value of the partial Hausdorff distance. Experimentally had been shown that 0.6 is a good value to compare shapes.  
Public Member Functions inherited from cv::ShapeDistanceExtractor  
virtual float  computeDistance (InputArray contour1, InputArray contour2)=0 
Compute the shape distance between two shapes defined by its contours.  
Public Member Functions inherited from cv::Algorithm  
Algorithm ()  
virtual  ~Algorithm () 
virtual void  clear () 
Clears the algorithm state.  
virtual bool  empty () const 
Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read.  
virtual String  getDefaultName () const 
virtual void  read (const FileNode &fn) 
Reads algorithm parameters from a file storage.  
virtual void  save (const String &filename) const 
void  write (const Ptr< FileStorage > &fs, const String &name=String()) const 
virtual void  write (FileStorage &fs) const 
Stores algorithm parameters in a file storage.  
void  write (FileStorage &fs, const String &name) const 
Additional Inherited Members  
Static Public Member Functions inherited from cv::Algorithm  
template<typename _Tp >  
static Ptr< _Tp >  load (const String &filename, const String &objname=String()) 
Loads algorithm from the file.  
template<typename _Tp >  
static Ptr< _Tp >  loadFromString (const String &strModel, const String &objname=String()) 
Loads algorithm from a String.  
template<typename _Tp >  
static Ptr< _Tp >  read (const FileNode &fn) 
Reads algorithm from the file node.  
Protected Member Functions inherited from cv::Algorithm  
void  writeFormat (FileStorage &fs) const 
A simple Hausdorff distance measure between shapes defined by contours.
according to the paper "Comparing Images using the Hausdorff distance." by D.P. Huttenlocher, G.A. Klanderman, and W.J. Rucklidge. (PAMI 1993). :

pure virtual 
Python:  

cv.HausdorffDistanceExtractor.getDistanceFlag(  ) >  retval 

pure virtual 
Python:  

cv.HausdorffDistanceExtractor.getRankProportion(  ) >  retval 

pure virtual 
Python:  

cv.HausdorffDistanceExtractor.setDistanceFlag(  distanceFlag  ) >  None 

pure virtual 
Python:  

cv.HausdorffDistanceExtractor.setRankProportion(  rankProportion  ) >  None 
This method sets the rank proportion (or fractional value) that establish the Kth ranked value of the partial Hausdorff distance. Experimentally had been shown that 0.6 is a good value to compare shapes.
rankProportion  fractional value (between 0 and 1). 